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Figure 4 | BMC Plant Biology

Figure 4

From: Antagonistic actions of boron against inhibitory effects of aluminum toxicity on growth, CO2 assimilation, ribulose-1,5-bisphosphate carboxylase/oxygenase, and photosynthetic electron transport probed by the JIP-test, of Citrus grandisseedlings

Figure 4

Effects of Al and B interactions on CO 2 assimilation (A), stomatal conducance (B), intercellular CO 2 concentration (C), initial Rubisco activity (D), total Rubisco activity (E), and activation state (F) in Citrus grandis leaves. Diagonal cross area quantifies the Al effect under different B supply. Each point is mean of 4 – 5 replicates with standard error. Difference among eight treatments was analyzed by 2 (Al levels) × 4 (B levels) ANOVA. P values for Al, B, and the interaction between the two were < 0.0001, 0.0121 and 0.0492 (A); 0.0308, 0.5072 and 0.1252 (B); 0.0041, 0.3548 and 0.1155 (C); < 0.0001, 0.1192 and 0.2326 (D); < 0.0001, 0.0016 and 0.1244 (E); 0.0575, 0.2836 and 0.2166 (F), respectively. Different letters indicate significant differences among eight treatments at P < 0.05.

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